Improvement in weft stop-motion for looms



@with tatrs @ar-rut' @Hire4 JOSEPH C. FIFIELD,` OF LOWELL,MASSACHUSETTS, ASSIGNOR TO W. N.

ELY, OF STRATFORD,` CONNECTICUT.

Letters Patent 'No.7 75,8488, dated .March 24, 1868.

IMPROVEMENT INWEI'T STOP-MOTION FOR LOOMS.

Be it known that I, JGSEPH C. FIFIELD, of Lowell, in the lState ofMassachusetts, have invented certain new and useful Improvements inStop-Motions for Looms, oi' which the following, with the drawings, is afull description.

Figure 1 is a top view. p

Figure 2 i's a. section through the line Y Y,looking from left to right.

Figure 3 is a section through the line X X, looking from right yto left.

Figure 4 isa view of thelfinger-device.-

Figure 5 is a section of shuttle-race and fingers, with yarn of 'shuttleunbroken.

Figure-6 is aseetion of shuttle-race and iingers,'with shuttle-yarnbroken.

A. Arepresent the frame-of a loom; B, yarn-beamg O, cloth-beam D,shuttle-race; E, the lay, pivotcd at a; F, the crank-shaft, running in`boites b; G, straps from the cranks to thc lay, foroperating the same;H, the position ofthe harness; I is a rod in bearings or boxes b b,attached tothe shuttle-race on the rear upper side. J J J,arc a seriesof levers, J being p'ivotod to the inside of' the frame'at c, and to J"at d. J is pivR oted to J" at e, the upper end of J passing Jip to andresting against the rear of the shuttle-race'.A fis a projectingrectangular hollow bracket, lfastened. to a cross-beam of the frame, atthe bottom thereof, through which the lower ends of J J project, andwhich keeps them in position as they rise and falh At the-upper end of Jis a small longitudinal` slot, g, from front' to rear, 7i is a fingerupon the red I, taking into the slot q of the lever-arm J.i K is a camupon the crank-shaft, and z' a friction-roller, attached to thelever-arm J, and resting upon the cam K. L is a fingerdcvice,` attachedto the rod I, and moving with it. y are depressions in the top of theshuttlc-race, into which the fingers ofL fall when the shuttle-yarn isbrokn. m m constitute a lever, m being pivoted to m at o, andthe'fulcrum being at n, upon aprojection underneath, and attached to theshuttle-race. at n. 1J is a. plate, attached to the front of theshuttle-racc, and projecting downwards, with a slot in it, through whichm passes, and which keeps it in place. When the fingers of L are above:he surface of the shuttle-race,m m is statiouary. lWhen, however, theseiingers fall into the slots, or recesses, or depressions jjj, a point orfinger, Z, attached to the rod I, falls upon m, and, forcing itdownward, throws m upward.

Thcoperation is as follows: When the lay or shuttlrace is thrown back,the cam K raises the lever-arm J and the -upper end of the arm Jl. TheVslot g, acting with and upon the finger h of the rod I, raises it,and,-

by so doing, raises thc iinger-dcvce Ii. When L is raised, the shuttlepasses, and its thread is laid along upon thc top of the bars orprojections between the depressions jjj, as in fig. 5, and the. laybeats up. .Solongfas the thread remains unbroken, the ngcrs of L, as thelay beats up, fall and rest upon this thread, and the work goes on; but,should the shuttle-thread become broken, the -fingers of L will falldown into thel depressions jjj, as in iig. 6, and the point Z, strikingon m, will depressit, and raise the' end of lever m', which,projeeting'ior- Ward, will, when so raised, strike thc properlcve.'-de`vice` 'or mechanism for nnshipping the holt, or otherwisestopping the motion of the loom.

This is a; stop-motion when the shuttle-thread breaks, and is peculiarlyadapted to fancy weaving, where several shuttles are used. The middlefinger of L is made long, and bent over, so as to prevent the thread oi'-any but-the shuttle immediately in use from getting under andcntangling.

What I claim, anddcsire to secure, therefore, is

1, The weft stop-motion mechanism, constructed, arranged, and operating,as to its scveral'parts, in the manner and by the means described, incombination with the lay, as set forth.

2. The finger-device, constructed and arranged in the manner andoperated by the means described.

3. The combination, with thelay, of parts L, n, m, and m, whenconstructed and arranged as and ior the purposes set forth. p w

In testimony whereof, I have hereunto subscribed my name. p

` JOSEPH C. FIFIELD.

Witnesses :1

T. S. SMITH, W. M: Pannen.

